Throughout the Trump administration, President Trump would routinely add his own words to speeches - esp at pressers... much to the dismay of his staff, and the delight of his detractors. He had some real doozies in his day (remember when he - off the cuff - seemed to imply that he wanted to use household disinfectants, intravenously, to fight COVID-19?)
The Dems were all "The President's words matter" at the time...
Now, the President is an even OLDER man: Joe Biden... and one who, while not as often (IMHO: because he's not actively trying to be the headline of every news-cycle!) ALSO has a tendency to put his foot in his mouth!
Most recently, President Biden remarked that (paraphrasing) Putin cannot remain in power... which is an implication that he's ready to commit to "regime change" in Russia! (That is actually a violation of US Law - for the US to "participate in the overthrow" of a Government, esp if done violently - without the express approval of Congress... like was done for Iraq).
Also, while in Poland and addressing US Troops stationed there, Biden remarked "off the cuff" that they (the troops) would see for themselves the butchery of Putin's army in Ukraine... in spite of the fact that we have a National Security Policy that states that we WILL NOT send US Troops to Ukraine as part of this conflict! (oops)
This is what happens when you have leaders THIS OLD! Biden is even older than Trump - and neither are mentally as sharp as they once were.